DK0735997T3 - Preparation of difluoromethane - Google Patents

Preparation of difluoromethane

Info

Publication number
DK0735997T3
DK0735997T3 DK95902899T DK95902899T DK0735997T3 DK 0735997 T3 DK0735997 T3 DK 0735997T3 DK 95902899 T DK95902899 T DK 95902899T DK 95902899 T DK95902899 T DK 95902899T DK 0735997 T3 DK0735997 T3 DK 0735997T3
Authority
DK
Denmark
Prior art keywords
difluoromethane
preparation
fluoromethyl
ether
boron trifluoride
Prior art date
Application number
DK95902899T
Other languages
Danish (da)
Inventor
Paul David Bernard Bujac
Jane Lesley Butcher
Original Assignee
Ici Plc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ici Plc filed Critical Ici Plc
Application granted granted Critical
Publication of DK0735997T3 publication Critical patent/DK0735997T3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/361—Preparation of halogenated hydrocarbons by reactions involving a decrease in the number of carbon atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A process for the production of difluoromethane which comprises contacting bis(fluoromethyl)ether in the liquid phase with boron trifluoride under conditions such that the molar ratio of boron trifluoride to bis(fluoromethyl) ether is at least 0.5:1.
DK95902899T 1993-12-23 1994-12-14 Preparation of difluoromethane DK0735997T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB939326233A GB9326233D0 (en) 1993-12-23 1993-12-23 Production of difluoromethane
PCT/GB1994/002734 WO1995017364A1 (en) 1993-12-23 1994-12-14 Production of difluoromethane

Publications (1)

Publication Number Publication Date
DK0735997T3 true DK0735997T3 (en) 1999-11-08

Family

ID=10747057

Family Applications (1)

Application Number Title Priority Date Filing Date
DK95902899T DK0735997T3 (en) 1993-12-23 1994-12-14 Preparation of difluoromethane

Country Status (11)

Country Link
US (1) US6194621B1 (en)
EP (1) EP0735997B1 (en)
JP (1) JP3524926B2 (en)
AT (1) ATE179694T1 (en)
CA (1) CA2179158A1 (en)
DE (1) DE69418343T2 (en)
DK (1) DK0735997T3 (en)
ES (1) ES2131795T3 (en)
GB (1) GB9326233D0 (en)
GR (1) GR3030160T3 (en)
WO (1) WO1995017364A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112479807A (en) * 2020-12-11 2021-03-12 平江县吉成科技有限责任公司 Method for recovering dichloromethane containing diethyl ether impurities

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9212925D0 (en) * 1992-06-18 1992-07-29 Ici Plc Production of hydrofluorocarbons

Also Published As

Publication number Publication date
EP0735997A1 (en) 1996-10-09
DE69418343D1 (en) 1999-06-10
JPH09506891A (en) 1997-07-08
JP3524926B2 (en) 2004-05-10
DE69418343T2 (en) 1999-09-09
US6194621B1 (en) 2001-02-27
CA2179158A1 (en) 1995-06-29
WO1995017364A1 (en) 1995-06-29
ATE179694T1 (en) 1999-05-15
GB9326233D0 (en) 1994-02-23
ES2131795T3 (en) 1999-08-01
EP0735997B1 (en) 1999-05-06
GR3030160T3 (en) 1999-08-31

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